DNxHR

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This page was written a few years ago

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Please accept our apologies for not having up-to-date information about this topic.

Nevertheless, we keep offering repair services for this type of damaged footage — with same level of quality as ever — and we will continue to do so in the future.

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DNxHR is a high-definition video post-production codec developed by Avid technology.

It extends DNxHD to resolutions over full HD and to cinema quality. DNxHR has HD, 2K, UHD and 4K profiles, with 5 quality flavors: LB (low bandwidth), SQ (standard), HQ (high-quality 8bit), HQX (high-quality 12bit) and 444.

DNxHR footage is usually found in MXF video files, but it can also be wrapped into QuickTime .mov containers thanks to the standalone codec both for Windows and Mac.

source: atomos.com

Recorders like above Atomos Shogun 4K use the HQX and/or 444 encoding profile in their recordings.

Detection

Treasured is capable of detecting and previewing DNxHR media in damaged files or disks.
Supported DNxHR profiles include:

Dimensions: 720p, 1080i, 1080p, 2048×1080 (2K), 3840x2160 (UHD), 4096x2160 (4K)
Bit Rates: from 40 Mbps for HD Low Bandwidth to 1800 Mbps for 4K top quality (444)
Bit Depth: 8bit, 12bit depth

Repairability

DNxHR media is repaired without major problem.

How to repair a corrupt DNxHR clip?

Whether it's a damaged disk, a corrupt MXF file or a damaged QuickTime movie, the easiest way is certainly to ask our Treasured Repair Service to do it for you.
But for those who can program, here you have a few tips:

Each DNxHR frame starts with this sequence of bytes: